KR200393558Y1 - Structure for removing gap in double wall corrugated pipe having socket - Google Patents

Abstract

The present invention utilizes a volatile lubricant and a stepping ring to remove the stepped portion generated when the end of one double wall pipe is coupled to the inside of the socket portion of the other double wall pipe, and to increase the watertightness, and to improve foreign matter, soil, sludge, etc. It is intended to provide a stepped ring coupling structure of a socket double wall pipe which prevents accumulation in the voids and prevents the stepped ring from being detached from the socket part.

The step ring coupling structure of the socket double wall tube of the present invention is formed inside the socket portion extended in a bell shape in the corrugated double wall tube, and has a ring-shaped seal having a shape corresponding to the void shape of the step portion of the socket portion. A gap portion 10; It characterized in that it comprises a step ring 100 made of an O-ring 20 is seated in the uneven groove portion (10a, 10c) of the air gap (10).

Description

STRUCTURE FOR REMOVING GAP IN DOUBLE WALL CORRUGATED PIPE HAVING SOCKET}

The present invention relates to a stepped ring coupling structure of a socket double wall pipe, and more specifically, to sewage and sewage of rainwater and industrially treated industrial wastewater into a reservoir or a river. It relates to a step ring coupling structure of the socket double wall pipe used to remove the step portion generated when connecting the corrugated pipe, corrugated pipe, double wall pipe having a shape.

Generally, corrugated double wall pipes are flexible sewage pipes, water collecting pipes, and drainage pipes formed of synthetic resin materials such as polyethylene (PE), polycarbonate (PC), ABS (Acrylonitrile Butadiene Styrene), and PVC (PolyVinyl Chloride). It is used in construction and has a double tube shape in which the equally spaced reinforcing ribs are integrally formed on the outer surface.

Among such corrugated double wall pipes, there are a pipe coupling method in a state of interposing a connecting pipe to extend the pipe in the axial direction, and a pipe coupling method using an integrated socket part.

For example, in the socket double wall tube, a bell-shaped socket portion is integrally formed at one end of the body portion of the socket double wall tube, and the other end of the body portion simply forms a corrugation with a double wall.

That is, as shown in FIG. 1A, the other end 1a of one socket double wall tube 1 is inserted into the socket portion 2a of the other socket double wall tube 2 so that the socket double wall tube 1, The overall shaft length of 2) s is extended. At this time, the watertight is maintained by a separate double wall pipe packing (3).

By the way, the general socket double wall pipes (1, 2) has a relatively large height (pipe wall thickness) due to wrinkles while the diameter of the socket portion (2a) is relatively larger than the diameter of the body portion of the socket double wall pipe (1) Inevitably, a step portion 5 corresponding to a kind of void is formed between the inner diameter starting point 2b of the socket portion 2a and the other end 1a of the socket double wall pipe 1.

That is, the step portion 5 means an annular gap having a jaw while being inclined to correspond to the inclination angle of the peak portion of the double wall tube 1 while being close to the right triangle cross section.

In the stepped portion 5 of this shape, when the double wall pipes 1 and 2 are used as sewage pipes, collection pipes, and drain pipes, foreign matter, soil, sludge, suspended solids, etc. accumulate and become dirty, and the fluid flows. This blockage, in severe cases, can block the entire pipe and prevent sewage from flowing anymore. Also, the soil and sludge accumulated in these spaces can rot, causing odors and germinating plants on top of these soils. Breakage may also occur.

In addition, as the space between the step portion 5 and the packing for the double wall pipe 3, other voids existing between the inner wall of the socket 2a and the outer wall of the double wall pipe 1 also have foreign matter, earth and sand, sludge, suspended matter, and the like. This flows in and may interfere with watertightness of the double wall pipe packing 3.

In addition, the double wall pipes 1 and 2 are characterized in terms of manufacturing characteristics, that is, when the soluble material for extruding the outer wall and the inner wall is injected from a plurality of nozzles of the extruder and flows in the axial direction of the cylindrical die, the pulsating type air flows from the air pump to the outer wall and the inner wall. Double walled with caterpillar mold apparatus, which is spun off between the soluble materials for extrusion and after being spaced apart from each other to coalesce to form a corrugated double walled tube shape and return to its original position It is manufactured by the pipe manufacturing apparatus, and accordingly, since it forms the inner wall shape corresponding to the outer diameter of the said cylindrical die continuously, it is hardly possible to manufacture a specific protrusion part integrally in the inside of a socket in itself.

In addition, in order to eliminate the gap in the stepped portion, the work of protrudingly cutting the bone portion of the double wall pipe is not only very inconvenient, but also causes the problem of weakening the strength of the pipe itself or the strength of the connecting portion.

In view of such a problem, the applicant has disclosed a step removal structure of a double wall tube having a socket, as disclosed in 2004 Republic of Korea Utility Model No. 0360689.

The step ring in the step removal structure of the double wall pipe of the prior art, as shown in Fig. 1B, in order to mount the step ring to the socket (2a) of the socket double wall pipe (2), the bond joint portion formed in advance ( The step ring 6 is fixed to the inside of the socket 2a of the socket double wall pipe 2 with 7a, 7b, and 7c, but the step ring 6 is spaced apart from the detachable or joined surface in the situation of loading or transporting the pipe. The disadvantage is that the phenomenon occurs.

Accordingly, an object of the present invention for solving the above-mentioned problems is to remove the step portion generated when the end of one double wall pipe is coupled to the inside of the socket portion of the other double wall pipe by using a volatile lubricant, an O-ring and a step ring. At the same time, it is intended to provide a stepped ring coupling structure of a socket double wall pipe that can increase watertightness, prevent accumulation of foreign matter, earth and sand, sludge, and the like, and prevent the stepping ring from being detached from the socket part.

In addition, another object of the present invention is to allow the O-ring of the rubber material to be effectively fixed and mounted through the stepped ring through a variety of cross-sectional structure, the socket double wall tube that can maximize the watertight retention and improve the ease of coupling It is to provide a stepped ring coupling structure of.

The object of the present invention as described above is in the stepped ring coupling structure of the socket double wall tube formed inside the socket portion extended in a bell shape in the corrugated double wall tube, the ring having a shape corresponding to the air gap shape of the step portion of the socket portion A sealed air gap portion; It is achieved by the stepped ring coupling structure of the socket double wall pipe, characterized in that it comprises a step ring made of an O-ring seated in the uneven groove portion of the air gap.

In addition, according to the present invention, the air gap has an inner circumferential surface corresponding to the inner diameter size of the inner wall of the double wall tube, it has a predetermined thickness in the radial direction and extends to have a predetermined width in the axial direction to form a horizontal flat cross section An inclined junction portion; A reinforcing part having a tapering shape integrally with the other side of the inclined joint part; It is preferable to include an inner diameter conjoining portion having a ring shape of a straight cross-section perpendicular to the other side of the reinforcing portion and forming the concave-convex groove portion on the upper outer edge of the O-ring for seating.

In addition, according to the present invention, the closed air gap is further formed with an uneven protrusion on the upper outer edge of the inner joint portion, so as to be coupled to the O-ring having a seating groove to seat the uneven protrusion on the seating groove of the O-ring. It is preferable.

In addition, according to the present invention, the O-ring is preferably inserted with a volatile lubricant to insert the step ring into the step portion.

In addition, according to the present invention, the O-ring is any one of a solid circular cross-sectional shape, 'F' cross-sectional shape, 'a' cross-sectional shape, 'b' cross-sectional shape, angled cross-sectional shape, 'c' cross-sectional shape It is preferable to have a shape.

In addition, according to the present invention, it is preferable that a plurality of inclined ribs are formed integrally on the outer peripheral surface of the O-ring.

Hereinafter, exemplary embodiments of the present invention will be described with reference to FIGS. 2 to 6D.

First embodiment

2 is an exploded perspective view illustrating a stepped ring coupling structure of a socket double wall tube according to a first embodiment of the present invention, and FIG. 3 is a cross-sectional view illustrating a closed gap of the stepped ring shown in FIG. 2. 4 is a cross-sectional view of a stepped ring coupled to an O-ring in the air gap shown in FIG. 3, and FIG. 5 is a cross-sectional view illustrating a stepped ring coupling structure of a socket double wall pipe by a stepped ring shown in FIG. 4.

First, as shown in Figure 2, the step ring coupling structure of the socket double wall tube according to the first embodiment of the present invention has a shape corresponding to the gap shape of the step portion generated when the pipe connection of the socket double wall tube Provided is a stepped ring 100 made of a closed gap 10 and an O-ring 20 seated in the uneven groove 10a of the closed gap 10.

O-ring 20 has an elastic force that can easily insert the step ring 100 into the stepped portion, and once inserted with a volatile lubricant such as gasoline, diesel, etc., the volatile lubricant is volatilized, the elastic force It serves to be fixed to the stepped portion using.

The material of the O-ring 20 is preferably any one of a conventional O-ring material used for rubber, urethane, or watertight.

The O-ring 20 basically has a simple solid circular cross-sectional shape as a ring shape, and is manufactured to have various cross-sectional shapes to be described below according to a design change.

The o-ring 20 may further include any one of a shape memory ring such as a ring-shaped spring ring or an elastic coring ring (not shown) at its axis to increase the elastic repulsion force.

As shown in Fig. 3, the closed void portion 10 is formed in a ring shape having an inner circumferential surface 10b corresponding to the inner diameter size of the inner wall of the double wall pipe.

In more detail, the closed air gap 10 has a predetermined thickness in the radial direction and extends to have a predetermined width in the axial direction so as to have an inclined joint portion 17 having a ring shape with a horizontal flat cross section, and the inclined joint portion 17. On the other side of the reinforcement part 18 having a tapered shape integrally with the other side, and the other side of the reinforcement part 18 has a ring shape of a straight cross-section perpendicular to the one-sided vertically and has a concave-convex groove for mounting the O-ring on the outer edge of the upper side ( It consists of the inner diameter connecting portion 19 formed 10a).

Here, the upper outer edge cross section of the inner diameter connecting portion 19 including the uneven groove 10a has a 'c' cross-sectional shape which is opened upward.

The concave-convex groove 10a is illustrated through a design change to increase the thickness in the axial direction at the upper outer edge of the inner diameter connecting portion 19 or a design change to reduce the width of the concave-convex groove 10a and the diameter of the O-ring, respectively. Of course, there can be more than one as well as one as described.

As shown in FIG. 4, the O-ring 20 described above is mounted to the uneven groove 10a, and the portion of the other O-ring 20 except for the portion inserted into the uneven groove 10a is out of the uneven groove 10a. It protrudes.

The operator applies a volatile lubricant based on the portion of the protruding O-ring 20, and then moves the stepped ring 100 to which the O-ring 20 is coupled to the stepped portion inside the socket portion 2a of the socket double wall pipe 2. Mounted at (5), this coupling structure is shown in FIG.

After a predetermined time has elapsed, all of the volatile lubricant is volatilized, and as a result, the step ring 100 is inside the socket portion 2a as the O-ring 20 is hermetically contacted and rubbed against the inner circumferential surface of the socket portion 2a. It is fixed.

O-ring 20 is in contact with the inner circumferential surface of the socket portion (2a) to maintain the first watertight when connecting the socket double wall pipe (1, 2), the second watertight double wall of the socket double wall pipe (1, 2) itself Retained by a customary packing (3).

Second embodiment

6 is an enlarged cross-sectional view of the step ring coupling structure of the socket double wall tube according to the second embodiment of the present invention.

As enlarged in FIG. 6, the stepped ring 100 according to the second embodiment has a sealed pore portion 10 having the same configuration as described in the above embodiment, and an inner diameter connecting portion of the sealed pore portion 10 ( Consists of the other O-ring 20 is coupled based on the uneven groove portion (10a) formed in 19.

O-ring 20 according to the second embodiment has a 'F' shaped cross-sectional shape, or have a 'b' shaped cross-sectional shape or 'b' shaped cross-sectional shape based on the outer edge 22, It has the shape of any one of the body shape which has the protrusion lip 21 in the bottom face, and further formed the some inclined lip 23 integrally in the outer peripheral surface of the O-ring 20.

The protruding lip 21 and the inclined lip 23 of the O-ring 20 increase the bonding strength of the sealing gap 10 with the inner diameter connecting portion 19 and can maintain a stable mounting state in insertion in the axial direction. It has an effect.

The plurality of inclined ribs 23 of the o-ring 20 has an effective function of preventing the release of the o-ring 20 in the opposite direction of the insertion while all the volatile lubricants are easily volatilized.

Third embodiment

6A is an enlarged cross-sectional view of a step ring coupling structure of a socket double wall tube according to a third embodiment of the present invention.

As shown in an enlarged view in FIG. 6A, the O-ring 20 according to the third embodiment coupled to the closed air gap 10 has a plurality of inclined ribs 23 described in the second embodiment in the axial direction from the outer circumferential surface thereof. It is formed to be arranged while maintaining a gap, the end (22a) of the outer lip 22 has a bracket cross-sectional shape in which the end of the 'b' is further bent inward, such as a hook shape inward.

The O-ring 20 is fixed by inserting and fixing the end 22a of the outer lip 22 to another concave-convex groove portion 10c that can be formed separately on the front side side of the inner diameter connecting portion 19 of the hermetic void portion 10. , And wraps the outer edge of the upper side of the inner diameter connecting portion (19).

Fourth embodiment

Figure 6b is an enlarged cross-sectional view of the stepped ring coupling structure of the socket double wall tube according to the fourth embodiment of the present invention, the O-ring 20 has a cross-sectional shape of the 'c', the inner diameter connecting portion of the sealed gap 10 It is coupled to surround the upper outer edge of the (19), and forms a plurality of inclined ribs on the outer peripheral surface of the O-ring (20).

The gripping features such as the 'c' cross-sectional shape of the O-ring 20 allow the O-ring 20 to seal the air gaps even if no uneven grooves are formed on the outer circumferential surface of the upper outer edge of the inner diameter connecting portion 19. 10) do not escape from each other.

Fifth Embodiment

Figure 6c is an enlarged cross-sectional view of the stepped ring coupling structure of the socket double wall tube according to the fifth embodiment of the present invention, the O-ring 20 has a plurality of inclined ribs 23 on its outer peripheral surface, overall '' 'cross-sectional shape It has a one end 22b is bent inwardly like a hook.

The end 22b of the O-ring 20 is stably inserted into and fixed to the uneven groove 10c formed on the side of the front side of the inner diameter connecting portion 19 of the air gap 10 so that the O-ring 20 is more firmly secured. It may be mounted on the upper outer edge of the inner diameter connecting portion 19.

Sixth embodiment

Finally, Figure 6d is an enlarged cross-sectional view of the stepped ring coupling structure of the socket double wall tube according to the sixth embodiment of the present invention, the O-ring 20 is formed on the outer peripheral surface, a plurality of inclined ribs 23, seating grooves on the inner peripheral surface It has a 'c' cross-sectional shape with 24.

 In addition, the air gap (10) is formed on the outer periphery of the inner diameter connecting portion 19 of the concave-convex protrusion 16 for mounting the O-ring, and coupled to the seating groove 24 of the O-ring 20 have.

Under such a coupling relationship, the O-ring 20 can effectively prevent the departure from the sealed gap 10.

In the present invention configured as described above, the stepping ring is easily inserted and coupled by the O-ring and the volatile lubricant, and once the stepping ring is mounted on the stepped portion inside the socket part, the stepping ring is caused by the elastic force of the O-ring. There is an effect of providing a step ring coupling structure of the socket double wall pipe is prevented from being detached.

In addition, since the stepped ring coupling structure of the socket double wall pipe of the present invention couples the O-rings having various cross-sectional shapes to the closed air gap such as a plurality of inclined ribs and protruding ribs are formed more integrally with the O-rings, There is an effect that can maintain a more stable mounting state inside.

In addition, the stepped ring coupling structure of the socket double wall pipe of the present invention has the advantage that the O-ring of the step ring ring to maintain the watertight multiple with the packing for the double wall pipe, it is possible to more effectively perform the watertight maintenance of the connection portion of the double wall pipe. .

1A is a cross-sectional view for explaining a coupling relationship between a general socket double wall pipe,

Figure 1b is an enlarged cross-sectional view for explaining the structure of removing the step of the socket double wall pipe shown in Figure 1a,

Figure 2 is an exploded perspective view for explaining the step ring coupling structure of the socket double wall pipe according to the first embodiment of the present invention,

3 is a cross-sectional view for explaining a closed gap of the step ring shown in FIG. 2;

4 is a cross-sectional view of the step ring coupled to the O-ring in the air gap shown in FIG.

5 is an overall cross-sectional view showing a step ring coupling structure of the socket double wall pipe by the step ring shown in FIG.

6 is an enlarged cross-sectional view of a step ring coupling structure of a socket double wall pipe according to a second embodiment of the present invention;

Figure 6a is an enlarged cross-sectional view of the step ring coupling structure of the socket double wall tube according to a third embodiment of the present invention,

Figure 6b is an enlarged cross-sectional view of the step ring coupling structure of the socket double wall tube according to the fourth embodiment of the present invention,

Figure 6c is an enlarged cross-sectional view of the step ring coupling structure of the socket double wall tube according to a fifth embodiment of the present invention,

Figure 6d is an enlarged cross-sectional view of the step ring coupling structure of the socket double wall tube according to a sixth embodiment of the present invention.

<Explanation of symbols for major parts of drawings>

10: sealed void portion 10a, 10c: uneven groove portion

16: uneven protrusions 17: inclined joint portion

18: reinforcement part 19: inner diameter connection part

20: O-ring 100: step ring

Claims (6)

In the stepped ring coupling structure of the socket double wall pipe formed inside the socket portion extended in a bell shape in the corrugated double wall pipe, A ring-shaped closed void portion 10 having a shape corresponding to the void shape of the stepped portion of the socket portion; Stepped ring coupling structure of the socket double wall pipe, characterized in that it comprises a step ring 100 made of an O-ring (20) seated in the uneven groove portion (10a, 10c) of the closed air gap (10). The method of claim 1, The closed air gap 10 has an inner circumferential surface 10b corresponding to the inner diameter size of the inner wall of the double wall pipe, and has a predetermined thickness in the radial direction and a predetermined width in the axial direction so as to have a horizontal flat cross section. An inclined junction portion 17 having; A reinforcing part 18 having a tapering shape integrally with the other side of the inclined joint part 17; An inner diameter connecting portion 19 having a ring-shaped cross-section perpendicular to the other side of the reinforcing portion 18 and having the concave-convex groove portion 10a formed on the outer edge of the upper side for mounting the O-ring 20. Stepped ring coupling structure of the socket double wall pipe comprising a. The method of claim 1, The sealing cavity 10 is further formed with an uneven protrusion 16 on the upper outer edge of the inner diameter connecting portion 19 to be coupled to the O-ring 20 having a seating groove 24, the O-ring 20 The stepped ring coupling structure of the socket double wall pipe, characterized in that the recessed convex protrusion 16 is seated in the seating groove (24) of the. The method of claim 1, The O-ring 20 is stepped ring coupling structure of the socket double wall pipe, characterized in that is inserted with a volatile lubricant to insert the step ring 100 in the step portion. The method of claim 1, The O-ring 20 has a shape of any one of a solid circular cross-sectional shape, 'F' cross-sectional shape, 'a' cross-sectional shape, 'b' cross-sectional shape, angled cross-sectional shape, 'c' cross-sectional shape Stepped ring coupling structure of the socket double wall pipe. The method of claim 1, Stepped ring coupling structure of the socket double wall pipe, characterized in that the outer circumferential surface of the O-ring 20 is formed with a plurality of inclined ribs 23 more integrally.